(资料图片仅供参考)

XML文件内容

xml操作代码示例：

using System.Collections;using System.Data;using System.Xml;using System.Xml.XPath;namespace xmltest{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            XML xml = new XML(Application.StartupPath + "\\config.xml");            string[] attstr = { "mac|08:00:27:00:D8:DC", "ip|192.168.1.1" };            string[] childstr = { "ip|192.168.1.1","name|BBQ"};            xml.AddNodes("config", "ips", attstr,childstr);        }        public class XML        {            string XMLFileName = "";            public XML(string xmlfilename)            {                XMLFileName = xmlfilename;            }            /// <summary>            /// 添加一个带属性的节点，可带子节点(attstr为null时没有属性)            /// </summary>            /// <param name="findnodename">在哪个节点下添加新节点</param>            /// <param name="creatnodename">新节点名称</param>            /// <param name="attstr">新节点属性字符串数组</param>            /// <param name="childinfostr">子节点属性字符串数组</param>            public int AddNodes(string findnodename, string creatnodename, string[] attstr, string[] childinfostr)            {                try                {                    XmlDocument xml = new XmlDocument();                    xml.Load(XMLFileName);                    XmlNode ndroot = xml.SelectSingleNode(findnodename);                    XmlElement nd = xml.CreateElement(creatnodename);                    if (attstr != null)                    {                        for (int i = 0; i < attstr.Length; i++)                        {                            string[] every = attstr[i].Split("|");                            nd.SetAttribute(every[0], every[1]);                        }                    }                    ndroot.AppendChild(nd);                    if (childinfostr != null)                    {                        for (int i = 0; i < childinfostr.Length; i++)                        {                            string[] infos = childinfostr[i].Split("|");                            XmlElement xe = xml.CreateElement(infos[0]);                            XmlText xt = xml.CreateTextNode(infos[1]);                            nd.AppendChild(xe);                            nd.LastChild.AppendChild(xt);                        }                    }                    xml.Save(XMLFileName);                    return 0;                }                catch (Exception ErrMsg)                {                    return 1;                }            }        }    }}

示例说明：

XML xml = new XML(Application.StartupPath + "\\config.xml");

//添加一个节点

string[] attstr = { "mac|08:00:27:00:D8:DC","ip|123"};

//给这个节点再添加子节点

string[] childstr = { "ip|192.168.1.1","name|BBQ"};

xml.AddNodes("config", "ips", attstr,childstr);//config是上级节点

运行结果如下：

注意：如果最后一个参数为null

xml.AddNodes("config", "ips", attstr, null);

则只添加父节点